N-Substituted Ureas and Thioureas in Biginelli Reaction Promoted by Chlorotrimethylsilane: Convenient Synthesis of N1-Alkyl-, N1-Aryl-, and N1,N3-Dialkyl-3,4-Dihydropyrimidin-2(1H)-(thi)ones
Synthesis and pharmacological activity of fluorine-containing derivatives of 1,2,3,4-tetrahydropyrimidine
作者:V. V. Kastron、R. O. Vitolin'、E. L. Kanina、G. Ya. Dubur、A. A. Kimenis
DOI:10.1007/bf00759433
日期:1987.8
KASTRON, V. V.;VITOLIN, R. O.;XANINA, E. L.;DUBUR, G. YA.;KIMENIS, A. A., XIM.-FARMATS. ZH., 21,(1987) N 8, 948-952
作者:KASTRON, V. V.、VITOLIN, R. O.、XANINA, E. L.、DUBUR, G. YA.、KIMENIS, A. A.
DOI:——
日期:——
N-Substituted Ureas and Thioureas in Biginelli Reaction Promoted by Chlorotrimethylsilane: Convenient Synthesis of <i>N</i>1-Alkyl-, <i>N</i>1-Aryl-, and <i>N</i>1,<i>N</i>3-Dialkyl-3,4-Dihydropyrimidin-2(1<i>H</i>)-(thi)ones
The classical Biginelli reaction has been extended by the use of N-substituted ureas and thioureas. A set of N1-alkyl-, N1-aryl-, and N1,N3-dialkyl-3,4-dihydropyrimidin-2(1H)-(thi)ones was readily prepared in excellent yield when chlorotrimethylsilane in N,N-dimethylformamide was used as promoter and water scavenger.